The Beatles' "When I'm Sixty-Four" Poetic Devices?

What poetic/literary devices can be found in this song when seen as a poem?

When I get older losing my hair,

Many years from now

Will you still be sending me the Valentine,

Birthday greetings, bottle of wine

If I'd been out till quarter to three

Wold you lock the door

Will you still need me, will you still feed me

When I'm sixty-four.

You'll be older too,

And if you say the word I could stay with you.

I could be handy mending a fuse

When your lights have gone

You can knit a sweater by the fireside

Sunday morning go for a ride

Doing a garden, digging the weeds,

Who could ask for more

Will you still need me, will you still feed me

When I'm sixty-four.

Every summer we can rent a cottage in the Isle of Wight,

if it's not too dear

We shall scrimp and save

Grandchildren on your knee

Vera, Chuck & Dave

Send me a postcard, drop me a line

Stating point of view

Indicater precisely what you mean to say

Yours sincerely, wasting away

Give me your answer, fill in a form,

Mine for evermore,

Will you still need me, will you still feed me

When I'm sixty-four